Filament heating  Uf .............................. 2.5 V  If .............................. 2.5 A  Static parameters  Ua .............................. 300 V  -Ug .............................. 45 V  Ia .............................. 60 mA  Gm .............................. 5.25 mA / V  ri .............................. 0.8 kΩ  μ .............................. 4.2  Pout .............................. 3.5 W  Limit rating ...

CV181-TII is double triode, used in voltage amplification circuit, Can be replaced directly by 6N8P and 6SN7GT. Heater UH: 6.3V IH: 0.6A Static Parameter Ua: 90 250 V Ug: 0 -8V Ia: 10 9 mA Gm: 3 2.6 mA/V Ri: 6.7 7.7 kΩ μ : 20 20 Ia: when Ug=-12.5V 1.3mA Ug: whenIa=-10uA - 7 -18V Maximum Rating class A1 Ua: 450V Ik: -20mA Pa: 5w Pa(No.1+No2): 7w Rg: 1MΩ Uhk: ±100V

Notice: the price is just for one tube,if you want to matched pair, please buy two tubes Some precautions about using high voltage power tubes:  Unlike other vacuum tubes such as KT88 or EL34, which typically run at 450V plate voltage, high voltage power tubes such as 845, 805 and 211 run at plate voltage 900V or even higher depending on your amp design. Due to the high voltage in the circuit, biasing an 845 / 805 or 211 amp improperly may expose you to lethal high voltage causing instant...

The price is for 1 pair (2 pcs).  Heater  UH………… 6.3 V  IH ………… 0.6A  Static Parameter  Ua ………………………… 90 250 V  Ug………………………… 0 -8V  Ia ………………………… 10 9 mA ...

WE211 is direct-heated type thorium tungsten cathode triode, can be used as class A, B and C. Heater Uf: 10 V If: 3.25 A Direct Interelectrode Capacitances input: 6 PF output: 5.5 PF grid to plate: 14.5 PF Static parameter Ua: 1250 V —Ug: 70 V Ia: 100 mA Gm: 3.8 mA/V u(Ia=75mA): 12 RL: 7 KΩ Pout: 10 W

Parameter：  The long waiting of the American WE300B re-issue from USA seems endless; but now Chinese tube manufacturer Psvane Audio has stepped up to make a 1:1 replica of the original WE300B.  According to Psvane Audio, the Psvane WE300B Replica is: “100% 1:1 replica of WE300B, including materials, structure, internal and external size – up to the detail of a tiny screw used”.  Sample production run in Dec 2011 with test launch in China and Japan on Jan 8th...

The price is for a pair of 2A3-TII hi-end vacuum tube (2 pcs).  The 2A3-TII direct heating cathode power double triode is used for A1 and AB1 class amplification. All items guaranteed 100% BRAND NEW in the original edition Box.  ONE-YEAR WARRANTY !!!  Filament heating  Uf .............................. 2.5 V  If .............................. 2.5 A  Static parameters  Ua .............................. 300 V  -Ug .............................. 45 V ...

Psvane HIFI Series UK-KT88 /UK-EL34/UK-6SN7 are new-creation, never have the better cost-effective in the history of Psvane. After almost one year time, these HIFI UK Series vacuum tubes were come out by development team of Psvane The three model tubes are adopt the most UK sound charms of” Mould screen” plate material, and join into the symbolic music and the extremely emotional appeal sound performance of Psvane.this will be most music you hear with the same price of vacuum tubes.

Classification-Dome-type or Aubergine-type bulb of glass, a white ceramic base with four-prong bayonet gold pins , oxide coated filamentary, solid plate, mesh plate, cabon plate triode.  Application-Audio frequency amplifier where power outputs of approximately 8.5watts or less is required at relatively low plate voltages.  Dimensions-Dimensions, outline diagrams of the tube and bases, and the arrangement of electrode connections to the base terminals are shown in Figures 1, 2 and...

Heater  Uf………………2.5V  If…………… 2.5A  Static Parameter  Ua……………………250V  -Ug………………… 60V  Ia……………………53mA  Gm……………………2.8 mA/V ...